Facebook suddenly banned this start-up from advertising, and its founder thinks Facebook is trying to squash a competitor
https://www.cnbc.com/2018/10/29/facebook-bans-ads-for-bloom-which-competes-with-facebook-login.html
Jesse Leimgruber is the co-founder of Bloom, a start-up building technology to help people keep control over their personal data as they sign into various online services and apps.
He and his team did what many start-ups do to accelerate growth: they advertised on Facebook.